For ACM Member Registration, please provide ACM Membership number during the online registration.

For Student Registration, you MUST be a full-time student at the time of the conference in February 2011 (not the time of paper submission). An official and valid student ID from a full-time enrolled institution must be:

scanned and sent to wsdm2011@gmail.com with a subject heading, “WSDM2011 Student Registration” by the time of registration, and

presented at the registration desk when picking up your badge at the conference.

Additional banquet tickets and eProceedings can be purchased during your online registration. They can also be purchased at the registration desk if not sold out.

You may check the information here to see whether you need a visa to enter Hong Kong.

We do not issue letters of invitation for employees of commercial organizations from countries that require a visa to Hong Kong unless the organization is known for being active in Web search, data mining and related fields. If in doubt, please contact us before registering.

We will ONLY issue invitation letters when a delegate is duly registered to WSDM 2011, i.e., a registration form has been made, and the related registration fees have been fully paid and received by our accounting office. Please send your request for an invitation letter with a subject heading, “WSDM2011 Request for An Invitation Letter” to wsdm2011@gmail.com.